Will your 1992 Chevy Silverado 5.7 starter fit in 1998 GMC Sierra 5.7?

While both are 5.7L engines and from the same GM family, there's no guarantee a 1992 Chevy Silverado starter will fit a 1998 GMC Sierra. GM made changes to engine components over those years, and even seemingly minor differences in the starter mounting points or electrical connectors could prevent compatibility.

It's best to check the part numbers. Find the part number on your 1992 Silverado starter and compare it to the part number for a 1998 Sierra 5.7L starter using an online auto parts catalog (like AutoZone, Advance Auto Parts, or RockAuto). If the part numbers match, or if the catalog lists the 1992 starter as fitting the 1998 model, then you should be good. Otherwise, don't risk it.